Box for stop-cocks of service pipes and valves



(No Model.)

A. 0. SMITH. BOX FOR STOP COCKS OF SERVICE PIPES AND VALVES.

No. 455,415. Patented Ju1y'7,189-1.

' wifnesks-es Bio/672T? ZZM MM UNITE STATES PATENT OFFICE.

ALVIN C. SMITH, OF JACKSON, MICHIGAN.

BOX FOR STOP-COCKS OF SERVICE PIPES AND VALYES.

SPECIFICATION forming part Of Letters Patent No. 455,415, dated July '7,1891. Application filed September 11, 1890. $erialNo. 364,701. (Nomodel.

a the same, reference being had to the accompanying drawings.

I am aware that a great variety of valveboxes for service-pipes exists;but in all of them there are objectionable features that in manyinstances make them almost inoperative or to agreat extent destroystheirutility. The screw, as heretofore applied to the upper and lowersections, as working upon threads or lug,

often by the action of water becomes adhered, or, on account of sand,obstructed, and cannot be made to work one within the other, and whensubjected to a heavy pressure from above are driven down upon theservice-pipe, fracturing the standards of the lower section and injuringthe service-pipe itself. Often, also, by the heaving'of the ground onaccount of frost and the two sections adhering together the lowersection is drawn out of place and the facility of reaching the stop-cockgreatly impeded, if not entirely prevented. Again, the application ofthe cover through former devices has been unsatisfactory by reason ofits insecure locking. I11 myinvention I claim to have overcome theseimperfections, as will more fully appear by a careful examination andapplication of my devices.

The following is a brief description of the several views of thedrawings:

Figure 1 is a vertical section of the entire valve-box. Fig. 2 is avertical section of the lower section. Fig. 3 is a side view of the nutupon the outside of the upper section, showing the thread upon which itworks. Fig. a shows top View of the nut A. Fig. 5 shows the same withthe application of piece of iron to clean threads on outside of section0. Fig. 6 shows top of cover. Fig. '7 shows vertical View of cover. Fig.8 shows partial top and side View of section 0, relating to applicationof cover and bolt. Fig. 9 shows a view of the nut for cleaning thethreads on section G.

Similar letters refer to similar parts throughout the several views.

The following is a detailed description of said invention:

Fig. 1 represents a side view of the box, showing both upper section 0and lower section in place and upon the upper section the nut A,intended to raise and lower the upper section 0, which nut isstrengthened by the wings 13, which prevents a rotary motion of theupper section C. It also shows the bolts G, which screw into the nuts Aand hold .in position asmall piece of iron. (Shown in Fig. 9 as II andmarked in Fig. 1 as II and H The purpose of the pieces is to clean thescrew from dirt when section C is raised or lowered, the piece IIfollowing the depression in the thread of the screw. E in Fig. 1represents a pin, which passes through the cover (shown in Fig. 6) andenters aslot on thetop of section 0, so as to prevent the cover fromturning, and thereby making asure fastening.

Fig. 2 represents a side View of the lower section of the box, whichslides within the upper section 0.

Fig. 3 represents the nut A, showing an in side section. C shows thethread of the screw within the nut A. D represents the projection on nutA.

Fig. l represents top view of the nut A.

Fig. 5 represents the top of the nut A, showing the adaptation of thebolt G and the piece H to the nut A, for the purposes hereinbeforestated.

Fig. 6 shows the top of the cover. E represents a hole for the pin,which pin isintended to enter a slot on the top of the upper easing C,as shown in Figs. 1 and S.

Fig. 7 represents a side view of the cover, showing lugs F on the lowerpart of the cover.

Fig. 8 represents the top part-of the section 3, showing slots F, whichreceive the lugs F. (Shown in Fig. 7.) This slot runs in the inside ofthe top of the section C a distance of about one-half an inch,wherc itturns at right angles and runs about two inches, so that the lugs F maybe inserted in the slots F and pressed down until they reach the slotsrunning' at right singles thereto. Then when the 'ing said section C,with the wings B and bolt cover is turned the lugs F pass into the last-G and the piece of iron ii, for the purpose I; named slots, thuspreventing the cover from hereinbe'fore set forth. rising, and when thehole E comes opposite 2. In valve-boxes for seWice-pipesthe cover 5 thegroove or slot E the pin E is then inserthaving the hole for the bolt Eand the bolt ethand thereby the cover is secured in place. .3, incombination with the lugs F, and the What I claim is slots F and E andsection 0, with the wings 2o 1. In a stop-box for service pipe and valve13, bolt G, and pieces ll, sliding upon the sec-' boxes, the combinationof the nut A, placed tion K, for the purpose hereinbefore set forth.

IO upon the outside of section 0, constructed in ALVIN C. SMITH.

the inside, as hereinbefore set forth, to turn In presence of upon thethread shown upon the outside of CHAS. B. \VOOD,

section 0 for the purpose of raising or lower- MAI l\lANIATES.

